Hi all,
I’m having problems using mongoDB with high load.
The database has about 7200 collections, storing documents in different interval of time; every 1 sec in some cases, every 1 min in other. Each document is composed as
_id: timestamp
v1: double
v2: int
Each iteration, the application sends all the information to the database; there is no incomplete documents.
When I start using the application and requesting data, in several times, Mongo returns AssertionException, with code 0 and the following message
assertion src\mongo\client\dbclientcursor.cpp:228
According what I found, this message means that the cursor is not longer valid, it’s timed out. I configure the timeout when connecting with mongo server. At the beginning, the timeout was 60 secs. I increased it to 90 secs but it stills returns this error. I even tried to disabled the timeout.
Or
assertion src\mongo\util\net\message_port.cpp:278

Each request is handled by different threads
With low load, even returning these errors, everything keeps running. With high load, randomly, my server stops working on a request for data to some collection (not always the same).
These errors started when we upgraded to mongo 3; I tested mongo 3.0.7, 3.2.0, 3.2.7 and 3.3.8, and the behavior was the same in all cases.
In the Windows Event viewer, the error is
Faulting application name: app.exe, version: 0.0.0.0, time stamp: 0x5758321a
Faulting module name: mongoclient.dll, version: 0.0.0.0, time stamp: 0x5761d4aa
Exception code: 0xc0000005
Fault offset: 0x00000000000e1f0d
Faulting process id: 0x44d4
Faulting application start time: 0x01d1cbfea9b06353
Faulting application path: C:\Program Files\MyApp\App\app.exe
Faulting module path: C:\Program Files\MyApp\App\mongoclient.dll
Report Id: 2d0ad6f9-37f4-11e6-babf-0aa31160729b

Environment:
Windows Server 2008 R2 64 bits.
RAM: 15 GB
Mongo C++ legacy driver 1.1.1, compiled with Visual Studio 2010 and boost 1.60.0.
MongoDB running at localhost, with no replica

Can anyone help me?